1. Craspedolobium unijugum (Gagnepain) Z. Wei & Pedley, Fl. China. 10: 189. 2010.
巴豆藤 ba dou teng
Basionym: Millettia unijuga Gagnepain, Notul. Syst. (Paris) 2: 365. 1913; Callerya unijuga (Gagnepain) H. Sun; Craspedolobium schochii Harms.
Shrubs, scandent, to 3 m. Stems dark brown, pithy, ridged, appressed puberulent when young, glabrescent when mature, with dense brown lenticels. Leaves 3-foliolate; stipels acicular; leaflet blades obovate to broadly elliptic, 5-9 × 3-6 cm, both surfaces appressed puberulent but abaxially especially dense on veins, adaxially sometimes glabrescent, base broadly cuneate to rounded and asymmetric on lateral ones, apex obtuse and cuspidate. Pseudoracemes usually congested near apex of branchlets, 15-25 cm; flowering branchlet nodes with 3-5 fascicled flowers. Pedicels, calyces, and bracteoles yellow sericeous. Corolla red, 0.9-1.1 cm, glabrous. Legume linear, 6-9 × ca. 1.2 cm, flat, papery, brown tomentose, base rounded, apex acute and shortly beaked; abaxial suture narrowly winged, continuous within. Seeds 3-5(-7) per legume, reniform, lenticular. Fl. Jun-Sep, fr. Sep-Oct.
Sparse woodlands in moist soil, along trails; 600-2000 m. NW Guangxi, SW Guizhou, S Sichuan, Yunnan [Laos, Myanmar, Thailand].
The record of Millettia unijuga as treated in FRPS (40: 160. 1994) is based on a single specimen (P. I. Mao 6915, 24 Oct 1955, KUN) from S Yunnan, which was used for the illustration in FRPS (t. 47, f. 1-2). This specimen may possibly represent an as yet undescribed species.